FIELD: medicine.
SUBSTANCE: invention relates to field of medical equipment and deals with piston for hollow objects for medical purposes, in particular syringes and carpules. Piston contains at least one sliding surface for adjoining hollow object, at least one receiving area, in which antifriction substance can be placed, and at least one output means for output of at least one antifriction substance from at least one receiving area on at least one sliding surface. Receiving area is located in piston. Piston interacts with shutoff device, in first position of piston antifriction substance cannot be output from at least one receiving area, and in second piston position antifriction substance can be output by means of at least one output means on at least one sliding surface.
EFFECT: claimed invention provides reduction of friction of sliding surfaces, eliminates blocking syringe elements, and eliminates the need for preliminary covering of internal space of hollow object with antifriction substance.
13 cl, 9 dwg
